Body, generic

B00B6 Driver Seat Recline Position Restraints Sensor

Check engine lightUsually off
EmissionsNot relevant
Drive cycleNot required
Limp modeNo

B00B6 concerns a sensor that tells the restraint system how far the backrest of the driver seat is reclined. No carmaker documents this code publicly, and the NHTSA bulletin index has no entry for it. Patents show why the angle matters: an ATI patent lets the controller suppress or depower the airbag from seat position, back angle and belt spool-out alone, without looking at the occupant, and a Bosch application derives the tilt from a three-axis accelerometer in the seat back, uses a 45 degree limit to decide which airbags fire and feeds the angle into occupant classification. Autoliv even calibrated its classification mat at several back angles. If B00B6 is stored the module loses that input; the airbag lamp stays on until the sensor or its circuit is repaired.

Likely causes

Lead pinched or broken at the seat back hinge, where it flexes with every adjustment
Internal fault or loose mounting of the recline sensor
Sensor or seat back replaced without the required zero setting

Symptoms

  • Airbag warning lamp on
  • Airbag adaptation to a reclined seating position unavailable
  • Safety note: airbag system; disconnect seat and sensor plugs only de-energised (ignition off, battery off, wait time); calibrate the sensor after replacement, specialist workshop only

Repair estimate

DifficultyShop_onlyWorkshop job
Parts and labour€60–600
Time0.5–3 h

Typical range across vehicles; the real cost depends on what the testing finds.

Parts involved

driver recline sensorsrs seat wiringsrs control module

Related codes

B00B5B00C6B00A1

References: patents.google.com, patents.google.com, patents.google.com.